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authorSteve McIntyre <steve@einval.com>2021-03-23 23:49:46 +0000
committerSteve McIntyre <steve@einval.com>2021-03-23 23:49:46 +0000
commit1251a7ba86fc40a6aad8b4fecdbca2b61808d9fa (patch)
tree2125fda549aaca55cb49a48d54be77dec7fbf3df /gnu-efi/lib/mips64el/math.c
parent85b409232ce89b34626df9d72abedf5d4f5ccef6 (diff)
parent031e5cce385d3f96b1caa1d53495332a7eb03749 (diff)
downloadefi-boot-shim-debian/15.3-1.tar.gz
efi-boot-shim-debian/15.3-1.zip
Update upstream source from tag 'upstream/15.3'debian/15.3-1
Update to upstream version '15.3' with Debian dir 1b484f1c1ac270604a5a1451b34de4b0865c6211
Diffstat (limited to 'gnu-efi/lib/mips64el/math.c')
-rw-r--r--gnu-efi/lib/mips64el/math.c63
1 files changed, 63 insertions, 0 deletions
diff --git a/gnu-efi/lib/mips64el/math.c b/gnu-efi/lib/mips64el/math.c
new file mode 100644
index 00000000..8c164446
--- /dev/null
+++ b/gnu-efi/lib/mips64el/math.c
@@ -0,0 +1,63 @@
+/*
+ * Copright (C) 2014 Linaro Ltd.
+ * Author: Ard Biesheuvel <ard.biesheuvel@linaro.org>
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice and this list of conditions, without modification.
+ * 2. The name of the author may not be used to endorse or promote products
+ * derived from this software without specific prior written permission.
+ *
+ * Alternatively, this software may be distributed under the terms of the
+ * GNU General Public License as published by the Free Software Foundation;
+ * either version 2 of the License, or (at your option) any later version.
+ */
+
+#include "lib.h"
+
+UINT64
+LShiftU64 (
+ IN UINT64 Operand,
+ IN UINTN Count
+ )
+// Left shift 64bit by 32bit and get a 64bit result
+{
+ return Operand << Count;
+}
+
+UINT64
+RShiftU64 (
+ IN UINT64 Operand,
+ IN UINTN Count
+ )
+// Right shift 64bit by 32bit and get a 64bit result
+{
+ return Operand >> Count;
+}
+
+
+UINT64
+MultU64x32 (
+ IN UINT64 Multiplicand,
+ IN UINTN Multiplier
+ )
+// Multiple 64bit by 32bit and get a 64bit result
+{
+ return Multiplicand * Multiplier;
+}
+
+UINT64
+DivU64x32 (
+ IN UINT64 Dividend,
+ IN UINTN Divisor,
+ OUT UINTN *Remainder OPTIONAL
+ )
+// divide 64bit by 32bit and get a 64bit result
+// N.B. only works for 31bit divisors!!
+{
+ if (Remainder)
+ *Remainder = Dividend % Divisor;
+ return Dividend / Divisor;
+}